Why Does My Microwave Get Hot, Even When Not In Use

Why Does My Microwave Get Hot, Even When Not In Use?

If you’ve ever gone to seize one thing out of the microwave solely to seek out it heat, even when it hasn’t been used, you’re not alone. Many folks have skilled this problem, and it may be due to some completely different causes.

In this text, I’ll go over a number of the commonest the explanation why a microwave could also be getting sizzling, even when not in use and what you are able to do to repair the difficulty.

7 Reasons Your Microwave Gets Hot When Not in Use

The following are a number of the commonest the explanation why your microwave could also be overheating when not in use:

1. The Magnetron Is Malfunctioning

A magnetron is an digital machine that produces microwaves. The ensuing microwaves are then used to warmth meals rapidly and evenly. Without a functioning magnetron, your microwave gained’t be capable of produce the mandatory microwaves for heating meals.  

If your microwave is getting sizzling, even when it’s not in use, it might be as a result of a malfunctioning magnetron. When the magnetron isn’t working accurately, it will probably produce extra warmth which is able to trigger the equipment to overheat. Overheating can injury the interior parts of the microwave and result in extra severe issues if left unchecked. 

If you watched that your microwave has a malfunctioning magnetron, it’s essential to get it mounted as quickly as potential. The finest method to do that is by contacting an expert equipment restore service that may diagnose and restore the issue rapidly and safely. Trying to repair the difficulty your self might be harmful and will solely be tried by skilled professionals with the correct instruments and security tools. 

2. The Fan Isn’t Working Properly

Many microwaves include a fan that helps settle down the inside parts after every use. If the fan stops working or doesn’t work effectively, then warmth can construct up contained in the equipment and make it uncomfortable to the touch.

This might be as a result of a clogged fan or a malfunctioning motor. In both case, it’s essential to get the difficulty resolved as quickly as potential earlier than any additional injury can happen.

3. Something Is Blocking the Vents

If one thing is obstructing the vents of your microwave, then it’s not capable of launch warmth effectively. This can occur should you place one thing on high of your microwave (like a paper towel holder) or if there’s mud or particles blocking the vents. In both case, this prevents air from circulating correctly and causes warmth to construct up inside your equipment—leading to a sizzling exterior floor temperature. 

To stop your microwave from overheating, test for any obstructions close to or inside its vents and take away them as wanted. If there are any objects saved atop or round your microwave, transfer them away from it in order that air can flow into freely by its vents throughout operation.

Additionally, be sure that mud buildup isn’t blocking air circulation by cleansing out the inside of your equipment with cleaning soap and water each few weeks—this can assist maintain it operating effectively for years to come back!  

4. It’s Overheating Due to Overuse

If your microwave is getting sizzling, even when it’s not in use, then it might be as a result of overuse. This is extra prone to occur in case your microwave is outdated. As microwaves age, the interior parts put on down—which tampers with their effectivity and causes them to develop into hotter than traditional.

If that is the case, then it’s possible you’ll need to take into account changing your microwave with a more recent mannequin. This will assist be certain that you’re capable of get the correct cooking efficiency out of it. Or, should you’d favor to not substitute your microwave, then take into account giving it sufficient break between utilization and keep away from operating lengthy cooking cycles.

5. The Space Around the Microwave Is Too Cramped

Another potential cause why your microwave could also be getting sizzling is that if the house round it’s too cramped. When there’s not sufficient room for air to flow into freely across the equipment, then warmth can construct up and trigger it to overheat.

If this is a matter, then it’s possible you’ll have to rearrange the house round your microwave. Move any objects which may be blocking air circulation away from it and permit a minimum of just a few inches of clearance on all sides. This will be certain that air can freely stream round your equipment and assist maintain it from overheating.

For small kitchens, it could be needed to construct a cupboard or set up a shelf across the equipment to create a extra everlasting answer.

6. You Just Heat Food That Has Little to No Moisture for Too Long

Some kinds of meals are extra vulnerable to overheating than others. For instance, should you warmth meals with little to no moisture for too lengthy, then it will probably trigger the inside of your microwave to get too sizzling.

While many more recent fashions have designed security options that stop this from taking place, it’s nonetheless essential to know what sorts of meals are safer to cook dinner and for a way lengthy.

7. Something Inside the Microwave Is Faulty

Finally, if all else fails and your microwave continues to be overheating, then it might be as a result of one thing defective contained in the equipment. This can imply something from worn-out heating coils to a brief circuit or one thing else.

If that is the case, the very best factor to do is to take your microwave to an expert equipment restore service.

How Hot Should a Microwave Get?

The temperature of the partitions of a microwave can vary from barely heat all the way in which as much as sizzling relying on how lengthy it has been operating and the way highly effective it’s. Generally talking, should you place your hand an inch or two away from the floor of the wall and may really feel heat then that must be thought of regular.

However, if you’ll be able to place your hand immediately onto the wall and may not maintain it there as a result of extreme warmth then this might be an indication that one thing could also be unsuitable along with your microwave. 

Overheating can result in severe questions of safety corresponding to melting parts and even hearth. What’s extra, utilizing an overheated microwave may doubtlessly injury its inside elements which can make it unusable and even unsafe for future use. 


There are just a few the explanation why your microwave could also be getting sizzling, even when not in use. Some of those causes may be mounted comparatively simply, whereas others might require extra effort or alternative of the microwave itself.

No matter what the trigger, it’s essential to handle this problem as quickly as potential to keep away from any additional injury. If you’re experiencing this drawback and need assistance troubleshooting it, attain out to an expert for assist.

Related Questions

Why Does The Exterior of My Microwave Get Hot?

The exterior of a microwave oven can develop into sizzling when it’s in use or has lately been used for lengthy intervals of time. This is because of the warmth transferred to the outside of the equipment when it’s in use and it’s regular.

However, if the microwave is getting too sizzling, then it might be an indication of one thing is unsuitable and will warrant additional inspection.

Is It Normal for The Top of My Microwave To Get Hot?

It is regular for the highest of a microwave to get sizzling in sure areas. This is as a result of the microwave accommodates a tool often called the “nucotron”, which is chargeable for emitting microwaves all through the inside of the oven cavity. The nucotron generates warmth and may trigger elements of the highest floor to develop into heat to the contact.

Is It Normal for The Wall Of My Microwave to Get Hot After It’s Used?

Yes, it’s regular for the wall of your microwave to get sizzling after utilizing it. This is because of the energy transformer within the microwave that works to transform electrical energy that’s equipped from your property’s electrical outlet into the shape wanted to energy the equipment. While this course of takes place, there’ll often be some warmth generated by the transformer.

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